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US 11,453,578 B1Granted
Telescoping crane and related methods
OwnerSteve Napieralski, Gregory Lucasinventors
Life of this patent
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Abstract
Implementations of cranes may include a first telescoping boom and a second telescoping boom coupled within the first telescoping boom. The second telescoping boom may be entirely within the first telescoping boom when the second telescoping boom is in a fully extended position.
Claims14
A crane comprising:
- a mast coupled to an outer telescoping boom;
- an inner telescoping boom coupled within the outer telescoping boom, wherein the inner telescoping boom comprises an inner sleeve coupled within an outer sleeve;
- a threaded rod rotatably coupled within the inner telescoping boom and configured to rotate within the inner sleeve;
- and
- a sheave coupled to the outer telescoping boom;
- wherein the crane is configured to telescope under a load;
- and
- wherein a maximum distance the crane is configured to telescope is equal to a maximum distance the outer telescoping boom is configured to telescope.
5 more elements
A crane comprising:
- a mast coupled to a boom support;
- a first telescoping boom coupled within the boom support, the first telescoping boom comprising a first outer sleeve and a first inner sleeve, the first inner sleeve configured to fit within the first outer sleeve;
- a second telescoping boom coupled within the first telescoping boom, the second telescoping boom comprising a second outer sleeve and a second inner sleeve, the second inner sleeve configured to fit within the second outer sleeve;
- a threaded nut fixedly coupled to the second inner sleeve;
- and
- a threaded rod rotatably coupled within the threaded nut;
- wherein the crane is configured to telescope through rotation of the threaded rod;
- wherein the first inner sleeve is fixedly coupled to the second inner sleeve;
- and
- wherein the first outer sleeve is fixedly coupled to the second outer sleeve.
7 more elements
Dependencies are inferred from the claim text.